Synovial fluid inside the joint keeps the joint surfaces lubricated, like oil lubricates the parts of a machine. This fluid is contained inside the joint by the joint capsule, a watertight sac of soft tissue and ligaments that fully surrounds and encloses the joint.
These two vertebrae are the reason your neck can move in so many directions. The atlas is the first cervical vertebra-the one that sits between the skull and the rest of the spine.
Tanned blonde teen with amazing body gets used and abused by two guys
Added: 5 day(s) ago Duration: 30:11 Viewed: 1892